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Performance Tests
4–78
TDS 684A, TDS 744A, & TDS 784A Service Manual
H Press the side-menu Fields.
H Use the keypad to set the number of fields to 1 (press 1, then
ENTER).
H Press the side-menu Sync Width.
H Use the keypad to set the width to 400 ns (press 400, SHIFT, n,
then ENTER).
H Press the side-menu –more– 1 of 2. Then press V1 Start Time.
H Use the keypad to set V1 start time to 10.10 ms (press 10.10, SHIFT,
m, then ENTER).
H Press the side-menu V1 Stop Time.
H Use the keypad to set V1 stop time to 10.50 ms (press 10.50, SHIFT,
m, then ENTER).
H Press the main-menu Type pop-up to select Edge.
H Press HORIZONTAL MENU.
H Press the main-menu Record Length.
H Select the side-menu 1000 points in 20div. If needed, first press the
side-menu –more– until you see the appropriate side-menu item.
H Turn the HORIZONTAL POSITION knob to position the trigger
‘T’ two divisions to the left of the center screen.
H Press MEASURE.
H If needed, press the main-menu Select Measrmnt.
H Press the side-menu Negative Width.
H Press the side-menu Period.
b. Set up the pulse generator (PG502) for Sync Duty Cycle Test.
H Set PULSE DURATION to 50 ns.
H Set PERIOD to 10 ms.
H Set OUTPUT (VOLTS) to –1 for LOW LEVEL and +1 for HIGH
LEVEL.
H Depress the COMPLEMENT button.
H Be sure BACK TERM is depressed (in).